Enrico Veschetti - Academia.edu (original) (raw)
Papers by Enrico Veschetti
Environmental Monitoring & Assessment, 2002
Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy stud... more Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy studies on the environmental spread of the parasite are still scarce even if a high frequency of serological responses could suggest high rates of endemic Cryptosporidium infections. In this investigation the occurrence of the parasite in water samples from a municipal wastewater treatment plant was monitored with the aim to evaluate possible correlation between oocysts and bacterial indicators, pathogens and physico-chemical parameters using a multivariate analysis. Data collected showed high numbers of oocysts, with a high percentage of positive samples and a significant correlation with pH, redox potential and total organic carbon. No correlation was found between Cryptosporidium concentration and that of the other microrganisms. The results, through a probing statistical analysis, show that none of the selected microrganisms was a reliable predictor of the presence of the parasite.
Water, 2021
The reuse of Pteris vittata plants for multiple phytofiltration cycles is a main issue to allow a... more The reuse of Pteris vittata plants for multiple phytofiltration cycles is a main issue to allow an efficient phytoremediation of arsenic (As)-contaminated groundwater. Here, we assessed the capacity of phytofiltration of P. vittata plants grown for two cycles on naturally As-contaminated drinking water (collected in Central Italy), spaced by a growth cycle on non-contaminated water (N cycle). P. vittata young plants, with extensive frond and root development, were suspended individually in 15 L of water with initial As of 59 µg/L, without any additional treatment or water refilling. During cycle 1, in 45 days P. vittata plants reduced As concentration below 10 µg/L, the allowed EU limits for drinking water. During the subsequent 30 day-N cycle on non-contaminated water, no leaching of As from the roots was observed, while the water pH increased 0.9 Units, but is within the allowed limits. During cycle 2, under the same conditions as cycle 1, As concentration decreased below 10 µg/L ...
In the present paper different analytical methods for monitoring cationic surfactants in water ar... more In the present paper different analytical methods for monitoring cationic surfactants in water are described. An analytical procedure for quaternary ammonium compounds in swimming pool water is proposed. Moreover the bactericidal and bacteriostatic activity of N-alkyldimethylbenzylammonium chloride used with and without sodium ipochloride has been tested versus an Escherichia coli strain
Water, 2015
This study concerns the occurrence of arsenic in the groundwater system of the Cimino-Vico volcan... more This study concerns the occurrence of arsenic in the groundwater system of the Cimino-Vico volcanic area (central Italy), different parts of which are currently widely used for local drinking water supply and for irrigation. The system shows a complex groundwater circulation, including a continuous basal aquifer, discontinuous perched aquifers, groundwater flows at high altitude, and local interactions with rising thermal fluids. Data on arsenic contents in 250 water samples from springs and wells and in 68 samples from rock outcrops were measured and combined with already existing information. Results highlight that arsenic concentrations of groundwater are influenced by type of aquifer, groundwater flow path, arsenic content of the aquifer rocks, and interaction with fluids rising from depth. Waters circulating in the Vico volcanics, one of the prominent rock units of the area, have high concentrations of arsenic, both for the basal
Central European journal of public health, 1999
A comparative study on peracetic acid and sodium hypochlorite in inactivating bacteria and viruse... more A comparative study on peracetic acid and sodium hypochlorite in inactivating bacteria and viruses was carried out. Therefore the disinfection actions of peracetic acid, in comparison with sodium hypochlorite, was evaluated against the usual indicators of faecal contamination, the pathogen Salmonella, Pseudomonas spp., bacteriophages anti-Escherichia coli, F+/phage and the phage of Bactericides fragilis B40-8 and enteroviruses. Under the experimental conditions, no representative results were obtained for enteroviruses and phages because of their low concentration in the sewage effluent. On the other hand, the indicator organisms were reduced substantially by the sodium hypochlorite and peracetic acid concentrations, while more variable results were obtained against Pseudomonas and bacteriophages anti-Escherichia coli.
Central European journal of public health, 2005
A comparative study on the efficacy of peracetic acid and sodium hypochlorite in inactivating res... more A comparative study on the efficacy of peracetic acid and sodium hypochlorite in inactivating resistant stages of microorganisms such as Cryptosporidium, Giardia and Cl. perfingens was carried out. Furthermore the evaluation of the potential reciprocal correlation among the concentrations of the organisms was performed. The results obtained indicate that, at the same experimental conditions, peracetic acid and sodium hypochlorite have nearly similar reduction power against the resistant stages of Giardia and Cl. perfringens. Both the oxidants are instead less efficient in the abatement of Cryptosporidium oocysts. Findings have also confirmed our previous studies on the absence of association between Clostridium and the protozoa.
Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy stud... more Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy studies on the environmental spread of the parasite are still scarce even if a high frequency of serological responses could suggest high rates of endemic Cryptosporidium infections. In this investigation the occurrence of the parasite in water samples from a municipal wastewater treatment plant was monitored with the aim to evaluate possible correlation between oocysts and bacterial indicators, pathogens and physico-chemical parameters using a multivariate analysis. Data collected showed high numbers of oocysts, with a high percentage of positive samples and a significant correlation with pH, redox potential and total organic carbon. No correlation was found between Cryptosporidium concentration and that of the other microrganisms. The results, through a probing statistical analysis, show that none of the selected microrganisms was a reliable predictor of the presence of the parasite.
Bulletin of Environmental Contamination and Toxicology, 2015
In the frame of a long-standing action of remediation of industrial soil and prevention of water ... more In the frame of a long-standing action of remediation of industrial soil and prevention of water pollution, a monitoring of the drinking water of the Italian town of Colleferro was performed by the ISS. The town has 22,000 inhabitants and is adjacent to a big industrial site where HCH was produced. Industrial wastes were buried in the site, eventually contaminating superficial aquifers, while a canal serving the industrial plant spread the contamination into the Sacco river and thence to the agricultural soil and to cow milk. The contamination of superficial aquifers engendered fears of pollution of the deep aquifers whence the town draws its drinking water. The results of the monitoring indicate that there is no risk for the population from consumption of the water. In one of the wells the ε-HCH was the main isomer reaching a concentration of 66 ng/L: so far the presence of this isomer in water was never reported. The paper also summarily reports the main features of soil and superficial groundwater pollution in the area and briefly describes the main actions taken by the authorities.
Journal of Chromatography A, 2001
Gestione del territorio. …, 1999
Mancini L, Formichetti P, Veschetti E, Bernabei S, Rossi A, Angelone E, Giucca F, Dominici A, Bov... more Mancini L, Formichetti P, Veschetti E, Bernabei S, Rossi A, Angelone E, Giucca F, Dominici A, Bovina G, Callori di Vignale C, Tancioni L, Ottaviani M. Definizione di un protocollo di monitoraggio per la valutazione della qualità ecologica delle acque superficiali di un'area protetta dell' ...
Annali di igiene : medicina preventiva e di comunità
An investigation on the hygienic quality of the Tiber river was conducted with the aim both to en... more An investigation on the hygienic quality of the Tiber river was conducted with the aim both to enumerate Giardia cysts and Cryptosporidium oocysts in the water and to determine possible correlations between them and bacterial indicators, pathogens and physico-chemical parameters. A low hygienic water quality was evidenced, with high counts of microorganisms. Furthermore, variable concentrations of Giardia and Cryptosporidium were observed. No correlation was found between the protozoa concentrations and that of the other microorganisms, whilst a significant correlation with redox potential and Giardia cysts was calculated.
Journal of High Resolution Chromatography, 1992
The determination of the chemical forms and of the bonding of heavy metals in sewage sludge is of... more The determination of the chemical forms and of the bonding of heavy metals in sewage sludge is of great importance in evaluating the potential hazards deriving from the use of this sludge on agricultural land. In this paper two different kinds of sewage sludge which had ...
In the previous part of this study, a significant improvement of the fundamental relationships th... more In the previous part of this study, a significant improvement of the fundamental relationships that control GC resolution in a pressure-tunable assembly operating in isothermal conditions inside a single oven was made. A theoretical approach for the correct choice of the working temperature was proposed for the first time. In this second part of our report, a new interfacing device has been proposed for a rapid and reliable alignment of the two columns at the midpoint junction. Moreover, the results of a series of experimental tests have confirmed the validity of the proposed mathematical models.
Chromatographia
Two-metre long pieces were cut from a 25-m long fused silica GC column with an inner diameter of ... more Two-metre long pieces were cut from a 25-m long fused silica GC column with an inner diameter of 300 μm and a film thickness of 1.2 μm 5% phenyl polymetyhylsiloxane and used as traps to extract T2 mycotoxin from aqueous solutions. Water samples were pushed through the traps at various velocities using nitrogen, then rinsed and dried. The traps were installed in a PTV accessory within a GC oven with 5 cm of the outlet outside the oven. The portion of the trap within the oven was heated and the analyte was focused on the short piece outside the oven. The focused solute was then thermally desorbed and separated into another 25-m long capillary column installed in a second GC and directly coupled to the trap outlet (GC–GC tandem system). The recovery of the analyte was nearly quantitative and independent of sample salinity and experimental conditions set in the trapping operation.
Environmental Monitoring & Assessment, 2002
Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy stud... more Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy studies on the environmental spread of the parasite are still scarce even if a high frequency of serological responses could suggest high rates of endemic Cryptosporidium infections. In this investigation the occurrence of the parasite in water samples from a municipal wastewater treatment plant was monitored with the aim to evaluate possible correlation between oocysts and bacterial indicators, pathogens and physico-chemical parameters using a multivariate analysis. Data collected showed high numbers of oocysts, with a high percentage of positive samples and a significant correlation with pH, redox potential and total organic carbon. No correlation was found between Cryptosporidium concentration and that of the other microrganisms. The results, through a probing statistical analysis, show that none of the selected microrganisms was a reliable predictor of the presence of the parasite.
Water, 2021
The reuse of Pteris vittata plants for multiple phytofiltration cycles is a main issue to allow a... more The reuse of Pteris vittata plants for multiple phytofiltration cycles is a main issue to allow an efficient phytoremediation of arsenic (As)-contaminated groundwater. Here, we assessed the capacity of phytofiltration of P. vittata plants grown for two cycles on naturally As-contaminated drinking water (collected in Central Italy), spaced by a growth cycle on non-contaminated water (N cycle). P. vittata young plants, with extensive frond and root development, were suspended individually in 15 L of water with initial As of 59 µg/L, without any additional treatment or water refilling. During cycle 1, in 45 days P. vittata plants reduced As concentration below 10 µg/L, the allowed EU limits for drinking water. During the subsequent 30 day-N cycle on non-contaminated water, no leaching of As from the roots was observed, while the water pH increased 0.9 Units, but is within the allowed limits. During cycle 2, under the same conditions as cycle 1, As concentration decreased below 10 µg/L ...
In the present paper different analytical methods for monitoring cationic surfactants in water ar... more In the present paper different analytical methods for monitoring cationic surfactants in water are described. An analytical procedure for quaternary ammonium compounds in swimming pool water is proposed. Moreover the bactericidal and bacteriostatic activity of N-alkyldimethylbenzylammonium chloride used with and without sodium ipochloride has been tested versus an Escherichia coli strain
Water, 2015
This study concerns the occurrence of arsenic in the groundwater system of the Cimino-Vico volcan... more This study concerns the occurrence of arsenic in the groundwater system of the Cimino-Vico volcanic area (central Italy), different parts of which are currently widely used for local drinking water supply and for irrigation. The system shows a complex groundwater circulation, including a continuous basal aquifer, discontinuous perched aquifers, groundwater flows at high altitude, and local interactions with rising thermal fluids. Data on arsenic contents in 250 water samples from springs and wells and in 68 samples from rock outcrops were measured and combined with already existing information. Results highlight that arsenic concentrations of groundwater are influenced by type of aquifer, groundwater flow path, arsenic content of the aquifer rocks, and interaction with fluids rising from depth. Waters circulating in the Vico volcanics, one of the prominent rock units of the area, have high concentrations of arsenic, both for the basal
Central European journal of public health, 1999
A comparative study on peracetic acid and sodium hypochlorite in inactivating bacteria and viruse... more A comparative study on peracetic acid and sodium hypochlorite in inactivating bacteria and viruses was carried out. Therefore the disinfection actions of peracetic acid, in comparison with sodium hypochlorite, was evaluated against the usual indicators of faecal contamination, the pathogen Salmonella, Pseudomonas spp., bacteriophages anti-Escherichia coli, F+/phage and the phage of Bactericides fragilis B40-8 and enteroviruses. Under the experimental conditions, no representative results were obtained for enteroviruses and phages because of their low concentration in the sewage effluent. On the other hand, the indicator organisms were reduced substantially by the sodium hypochlorite and peracetic acid concentrations, while more variable results were obtained against Pseudomonas and bacteriophages anti-Escherichia coli.
Central European journal of public health, 2005
A comparative study on the efficacy of peracetic acid and sodium hypochlorite in inactivating res... more A comparative study on the efficacy of peracetic acid and sodium hypochlorite in inactivating resistant stages of microorganisms such as Cryptosporidium, Giardia and Cl. perfingens was carried out. Furthermore the evaluation of the potential reciprocal correlation among the concentrations of the organisms was performed. The results obtained indicate that, at the same experimental conditions, peracetic acid and sodium hypochlorite have nearly similar reduction power against the resistant stages of Giardia and Cl. perfringens. Both the oxidants are instead less efficient in the abatement of Cryptosporidium oocysts. Findings have also confirmed our previous studies on the absence of association between Clostridium and the protozoa.
Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy stud... more Contaminated water are recognized as a potential source of Cryptosporidium oocysts. In Italy studies on the environmental spread of the parasite are still scarce even if a high frequency of serological responses could suggest high rates of endemic Cryptosporidium infections. In this investigation the occurrence of the parasite in water samples from a municipal wastewater treatment plant was monitored with the aim to evaluate possible correlation between oocysts and bacterial indicators, pathogens and physico-chemical parameters using a multivariate analysis. Data collected showed high numbers of oocysts, with a high percentage of positive samples and a significant correlation with pH, redox potential and total organic carbon. No correlation was found between Cryptosporidium concentration and that of the other microrganisms. The results, through a probing statistical analysis, show that none of the selected microrganisms was a reliable predictor of the presence of the parasite.
Bulletin of Environmental Contamination and Toxicology, 2015
In the frame of a long-standing action of remediation of industrial soil and prevention of water ... more In the frame of a long-standing action of remediation of industrial soil and prevention of water pollution, a monitoring of the drinking water of the Italian town of Colleferro was performed by the ISS. The town has 22,000 inhabitants and is adjacent to a big industrial site where HCH was produced. Industrial wastes were buried in the site, eventually contaminating superficial aquifers, while a canal serving the industrial plant spread the contamination into the Sacco river and thence to the agricultural soil and to cow milk. The contamination of superficial aquifers engendered fears of pollution of the deep aquifers whence the town draws its drinking water. The results of the monitoring indicate that there is no risk for the population from consumption of the water. In one of the wells the ε-HCH was the main isomer reaching a concentration of 66 ng/L: so far the presence of this isomer in water was never reported. The paper also summarily reports the main features of soil and superficial groundwater pollution in the area and briefly describes the main actions taken by the authorities.
Journal of Chromatography A, 2001
Gestione del territorio. …, 1999
Mancini L, Formichetti P, Veschetti E, Bernabei S, Rossi A, Angelone E, Giucca F, Dominici A, Bov... more Mancini L, Formichetti P, Veschetti E, Bernabei S, Rossi A, Angelone E, Giucca F, Dominici A, Bovina G, Callori di Vignale C, Tancioni L, Ottaviani M. Definizione di un protocollo di monitoraggio per la valutazione della qualità ecologica delle acque superficiali di un'area protetta dell' ...
Annali di igiene : medicina preventiva e di comunità
An investigation on the hygienic quality of the Tiber river was conducted with the aim both to en... more An investigation on the hygienic quality of the Tiber river was conducted with the aim both to enumerate Giardia cysts and Cryptosporidium oocysts in the water and to determine possible correlations between them and bacterial indicators, pathogens and physico-chemical parameters. A low hygienic water quality was evidenced, with high counts of microorganisms. Furthermore, variable concentrations of Giardia and Cryptosporidium were observed. No correlation was found between the protozoa concentrations and that of the other microorganisms, whilst a significant correlation with redox potential and Giardia cysts was calculated.
Journal of High Resolution Chromatography, 1992
The determination of the chemical forms and of the bonding of heavy metals in sewage sludge is of... more The determination of the chemical forms and of the bonding of heavy metals in sewage sludge is of great importance in evaluating the potential hazards deriving from the use of this sludge on agricultural land. In this paper two different kinds of sewage sludge which had ...
In the previous part of this study, a significant improvement of the fundamental relationships th... more In the previous part of this study, a significant improvement of the fundamental relationships that control GC resolution in a pressure-tunable assembly operating in isothermal conditions inside a single oven was made. A theoretical approach for the correct choice of the working temperature was proposed for the first time. In this second part of our report, a new interfacing device has been proposed for a rapid and reliable alignment of the two columns at the midpoint junction. Moreover, the results of a series of experimental tests have confirmed the validity of the proposed mathematical models.
Chromatographia
Two-metre long pieces were cut from a 25-m long fused silica GC column with an inner diameter of ... more Two-metre long pieces were cut from a 25-m long fused silica GC column with an inner diameter of 300 μm and a film thickness of 1.2 μm 5% phenyl polymetyhylsiloxane and used as traps to extract T2 mycotoxin from aqueous solutions. Water samples were pushed through the traps at various velocities using nitrogen, then rinsed and dried. The traps were installed in a PTV accessory within a GC oven with 5 cm of the outlet outside the oven. The portion of the trap within the oven was heated and the analyte was focused on the short piece outside the oven. The focused solute was then thermally desorbed and separated into another 25-m long capillary column installed in a second GC and directly coupled to the trap outlet (GC–GC tandem system). The recovery of the analyte was nearly quantitative and independent of sample salinity and experimental conditions set in the trapping operation.